arm64: dts: rockchip: Add nodes for SDIO/UART Wi-Fi/Bluetooth modules to Radxa Rock 3A

This patch adds related bus/pinctrl/power nodes to enable support for
Radxa's Wi-Fi Bluetooth combo module.
Tested with RADXA A6 module, which uses AP6275S (BCM43752A2)

Signed-off-by: Shengyu Qu <wiagn233@outlook.com>
Link: https://lore.kernel.org/r/OS3P286MB25972313C916A68698B1CD8698359@OS3P286MB2597.JPNP286.PROD.OUTLOOK.COM


Signed-off-by: Heiko Stuebner <heiko@sntech.de>